Air-governor.



C. TROJOVSKY.

AIR GOVERNOR.

APPLICATION FILED 11011.19, 1913.

1J gjm, Patented Feb. 23, 1915.

.7 WW' *2 le le' 20 Z0 Hw Il a mm) "3 1' l) 15 E 3 if@ gl 1o 19 16 a 1o prllCEi' aleeovewoa To all whom it may concern:

Be it known that I, CHARLES TRoJovsKY, a citizen of the United States, residing at Norway, in the county of* Benton and' State of Iowa, have invented certain new and useful Improvements in Air-Governors; and I'do hereby declare the following to be a full, clear, and exact description1 of the invention, such as will enable others skilled in the art to which it appertains to make f and use the same.

, This invention relates to air governors, designed to be connected to the main valve of a compressed air reservoir to serve as a safety valve for relieving the reservoir of undue pressure, and one of the 4principal objects of the invention is to provide simple and eiicient means to regulate the air pres' sure and to be set at any required predetermined position to operate for relieving the reservoir of undue airpressure and to close the outlet Valve of the reservoir after a prey determined pressure has been attained.

Another object of the invention is to provide a spring regulated air valve to be connected to the main valve of. an air reservoir, means being provided for adjusting the stress or tension of the spring to any predetermined degree of pressure, and to provide means for indicating the pressure at which the valve may be set for operation.

These and other objects may be attained by means of the construction illustrated in the accompanying drawings, in which,

Figure 1 is a sideelevation ofan air governor made in accordance with this invention, Fig` 2 is a top plan view of the same, andyFig. 3 is a vertical sectional view of the same. Fig 4 is an enlarged detail of the dome and registering mechanism of the air governor.

Referring to the drawings the numeral 1 designates the main air valve connected to the reservoir, not shown, and 2 is the main valve stem extending through a threaded collar 3, and through an enlarged opening 4, in said collar.

Connected to the upper end of the valve casing 1 is a ring or collar 5 provided with an outwardly projecting annular flange 6. An open dome 7 comprising a plurality of arms or members 8, is connected to the collar 5, by means of inturned lugs 9 which exil tend underneath the flange 6 of said collar.

Specication o'f Lettera Patent.

-said arms, and the Patented web.. 23, 1915.

.application tiled November 1B, 1913. Serial No. 801,960.

purpose being-to hold the lugs 9 in position underneath the flange 6. j V

A spiral spring ll'is mounted between the arms 8 of the dome, said spring bearing at 1ts upper end against a rectangular nut 12, sald nut at its upper surfacebearing against a curved washer l13, having a vcentral perforation 14, through which an adjusting screw 15' extends, said screw consisting of the threaded4 portion b engaged by the nut 12, the shoulder c, and the'plain unthreaded shank 15, which extends through the curved washer 13 and is provided with a grooved head to be operated by a screw-driver for adjusting' the tension of the spring 11. The lower end of the spring 11 bears against a nut 16, through which a screw bolt 17 extends, and mounted on said screw boltl 17 underneath the nut 16 is a rubber gasket 18, designed `to bear against the upper edge of the main air valve casing 1.

Extending outward from the rectangular nut 12 is a pointer 19, designed to coperate with a series of scale marks 20 on one of the tively to the scale 20, to indicate the required pressure at which the main valve of the air reservoir will be relieved.

As shown in Fig. 3 the lower end of the screw bolt 17 bears against the stem 2 of the main air valve and normally holds the valve open so that the air will pass through the opening4 into the upper end of the casing 1. l/Vhen the air pressure has reached a point beyond the predetermined safety pressure the gasket 18 will be forced upward to permit the air to escape from the upper end of the collar 5 and out between the arms 8. Immediately after the pressure has been reduced in the reservoir sufficiently, the spring 11 will force the. asket 18 down in place to stop the outward flow of air.

From the foregoing it will be obvious that my invention is of simple construction and can be attached to any ordinaiyf compressed arms having inwardly turned lugs to engage Q I 15129,'res' a `flan e on the outlet airsvalve of a compresse air reservoir, "a ring surrounding the arms for holdin the, lugs connected to said fiange, a spira spring in saiddqme 5 and having a valve structure associated with Y itsV lower" end for controllin 'the compressed air reservoir, a screwz a threaded "nut thereon, said spring beann t at its upper end against said nut and sal 10 screw having-a reduced extension projecting through said dome and rovided with.y a

groove to receive a screwriver for adjustlng the tension .oflsaid s ring. 2.l In a device of the caracter described,

l5 the 'combination of a vdome comprising dependin arms spaced apart, means for secure ing sai arms to the Ioutlet of'a compressed air valve, a spring in the said dome and having a valve structure associated with its '20 lower end for controlling the egress opening of the compressed air reservoir, a threaded screw, a nut mounted on said screw against which the upper end ef said spring bears, said nut carrying a polnter, and one of said 25 v arms havlng indlcatlng marks thereon, said the outlet j Qf screw having a reduced ortion, a curved washer through which sai reduced portion extends, said reduced ortion projectin p through thetop ofthe ome and provided withmeans for turning the same to rotate s0 the screwnndsadjust the tensionf said ,Y

spring. .i l3. n a device ofthe character described the combination of a dome comprising depending armsfspaced apart, means for secur- 35 ing said arms to the outlet of a com ressed J. C. Mnsmrmn, 4W. L. NonLANn. 

